模糊参数自整定PID控制算法在真空冶炼中的应用  

Design of Parameter Self-Tuning Fuzzy PID Controller for Vacuum Metallurgy

作　　者：陈焰[1] 张矿伟[1] 赵晓侠[1] 戴永年[2] 何宇翔[1] 雷金辉[1,2] 

机构地区：[1]昆明理工大学信息工程与自动化学院,昆明650500 [2]昆明理工大学冶金与能源工程学院真空冶金国家工程实验室,昆明650093

出　　处：《真空科学与技术学报》2014年第5期528-532,共5页Chinese Journal of Vacuum Science and Technology

基　　金：真空冶炼炉温度场有限元模拟研究项目(KKSA201331004)

摘　　要：PID控制在工业控制中应用广泛,但在实际的工业生产中PID参数需要人工在线多次整定,耗时长、能耗高、效率低;整定过程影响产品质量、甚至不出产品。在用阶跃响应曲线法研究真空冶炼炉温度模型的基础上,设计了一种高精度参数模糊自整定PID控制器。经一次整定可获得较理想的PID参数。从2009年投入使用至今,结果表明：上升时间由原系统的80缩短到45 min;最大偏差减少了3/4;稳态误差由原系统的1.5%~2%降低到0.5%以下。PID参数整定克服了人为因素影响;参数整定及控制时间大为缩短;降低了能耗,提高了生产效率,提高了控制精度,保证了产品质量。Anovel parameter self-tuning fuzzy PID controller was developed for vacuum metallurgy,based on the temperature model of the vacuum furnace formulated in step response method. The high-precision parameter self-tuning fuzzy PID controller has been successfully working for over 4 years since 2009. Interesting finding was that the ideal PID parameters can be obtained by tuning only once with the newly-developed PID controller. The four years＇ test shows that the new PID controller outperforms the conventional PID controller in many ways. For instance,it shortened the rising time from 80 min. to 45 min.,decreased the maximum deviation by 3 /4; and reduced the steady state error from 1. 5% ~ 2. 0% to below 0. 5%. Besides,its technical strengthens include the rapid parameter-setting and controlling,removal of human impact,reduction of energy consumption,better control accuracy,higher production efficiency, and ensured product quality.

关 键 词：模糊参数自整定 PID控制 真空冶炼 对象特性 温度控制 

分 类 号：TF355[冶金工程—冶金机械及自动化] TF8